Text and illustrations present the life of the prehistoric animal known as the megalodon, including information on how it looked, along with its behavior.

Janet Riehecky is a longtime writer for children. She has worked as a high school English teacher, a college professor, and a children's book editor. Her 24 volume series Dinosaurs! won the Summit Award for Best Children's Nonfiction, presented by the Society of Midland Authors, and her Tasmanian Tiger was a Junior Library Guild selection. Janet loves to collect dinosaur bones. On a dig in western Colorado, she dug up the first bone found of a brand new dinosaur, the Mymoorapelta.